Thanks again to everyone for their useful replies.
In the meantime, I've also received the following response from the Thai Embassy in London, which looks like a good route forward:
Dear Sir/ Madam, Non-Immigration Type O visit and staying with family in Thailand Eligible Applicants for O Spouse Visa
- This category of visa is issued to applicants who are spouses, parents, or children of Thai nationals and are currently residing in the UK Ireland UK Territories.
- This category of visa is issued to applicants who are spouses, children (under 20), and parents (with special care requirements) of the applicants working in Thailand. O Spouse Visa Conditions
- The O Spouse is valid for a single entry 90 days or multiple entries 1 year from the date of issuance (period of stay not exceeding 90 days for each visit).
- (In case of the dependant of applicants working in Thailand) The visa entry (single entry / multiple entries) will be issued in accordance with the main applicant who is applying for a Non-B Visa. If the main applicant applies/has a non-immigrant B single entry visa, the family will get a non-immigrant O single entry visa.
- The extension of stay is at the discretion of the Immigration Officer. Extension applications can be made at the Office of Immigration Bureau (visit https://www.immigration.go.th/ for more information).
- If the O Spouse Visa holder breaches the entry conditions, the stay permit will be revoked and he/she will be prohibited from entering Thailand in the future. Required Document
1. Biodata page of Passport or Travel Document.
2. Declaration.
- Visa declaration must be downloaded and signed. Illegible youth declaration form can be signed by their parents/ guardians.
3. Financial evidence, e.g. bank statements, proof of earnings, proof of sponsorship from a third party
-Your recent official UK/Ireland bank statement shows your name, address, and a minimum
closing balance of £500 (for individual single entry) £1,000 (for family single entry), £5000 (for individual multiple entries, and £10,000 (for family multiple entries) , proof of earnings (payslips) or sponsorship letter from your sponsor with official ID and their Bank Statements. (Do not send the screenshot)
4. Photograph *taken within the last six months. If the photograph does not reflect your current appearance you may be refused to enter the Kingdom of Thailand.
- If the photograph is inappropriate, and does not reflect your current appearance your visa may be rejected to enter the Kingdom of Thailand.
5. Personal details of a family in Thailand, e.g. ID card, Passport and the visa page or stay permit in Thailand .
- Applicants who are spouses and children of person working in Thailand are required to submit a confirmation letter from the employer of their family members working in Thailand mentioning all applicant names, visa page/ work permit of their family members.
6. Proof of accommodation in Thailand, e.g. Accommodation bookings, and invitation letters from family/friends in Thailand.
- Invitation letters from family/friends must be submitted with their respective official photo ID.
- Accommodation booking must have details of applicant name/ date (check in and check out)/ address and contact no. of your accommodation.
7. Proof of relationship to a family in Thailand, e.g. A copy of marriage certificate/birth certificate/certificate of adoption.
- Copy of original document (Documents in foreign languages must be translated into English and the translation must be certified by the relevant embassies in London.).
8. Residence permit in a country in which the visa application is submitted (In case the applicant is not a national of the country in which the visa application is submitted.).
- In the case of non-UK / non-Irish national applicants, a copy of the BRP card / Ireland residence card or letter from UKVI(UK visa) settlement status must be provided. UK nationals can provide a UK Driving licence (for UK/Ireland nationals) or any UK ID to fulfil the requirement of the application.
9. The letter from your spouse indicated that you both are still married and he/she acknowledges of your visit.
10. All travel records for the past 12 months (1 year) since the last international trip.
- International travel record over the past 12 months from the application date.
11. Document that can verify applicant's current residency (Applicant must apply for e-Visa via a specific Embassy/Consulate conforming with his/her consular jurisdiction and residency.).
- Applicants are requested to submit their local utility bills eg. electricity bills/ gas / mobile phone / rental agreements.
12. Bank statement, showing GBP10,000 minimum, with name & visible Below are the steps to apply for a visa. 3) 1) Please visit www.thaievisa.go.th 2) Sign up for individual 3) Complete the visa application, submit and make a payment online 4) From 27 September 2021, you do not need to post your passport and original supporting documents to the embassy. 5) Instead, your visa will be approved online, and a confirmation e-mail will be sent to your registered email address. 6) You may print a copy of your visa for airlines and Thai Immigration officials to carry out checks when travelling to Thailand. 4) Providing you meet all the eligibility criteria, and uploaded all the required documents in the visa system, the current online visa processing time is approximately 10-15 working days, from the date your visa application is submitted Please check online for your visa status. "Finished" & "Issued Visa" mean your visa has been granted, and the online email confirmation has been sent to you. If you did not get the visa through your email, please log in to your E-visa system to print a copy of your visa. 1. Log in to your account 2. Click Manage Visa Application 3. Click the "blue paper" on the top right corner 4. Click download to get a copy of your visa I hope this is of assistance, but please do let us know if you have any further questions. Warmest regards, The Visa Team Email:
[email protected]: https://www.facebook.com/ThaiEmbLondonWebsite: https://london.thaiembassy.org/